I found 16 new game reservation cards this weekend at Walmart. They are available in Electronics, usually locked up in the videogame section. Identified as VIP Pre-Order Program Reservation Cards, the cards are mounted on plastic hangtags. They cost $5 to activate (and will presumably reserve your copy of a yet-to-be-released game) but can be used for purchases throughout the store. I have been unable to buy gas at the pump with them, though.